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Bayesian Treatment of the Independent Student- t Linear Model

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  • Geweke, J

Abstract

This article takes up methods for Bayesian inference in a linear model in which the disturbances are independent and have identical Student-t distributions. It exploits the equivalence of the Student-t distribution and an appropriate scale mixture of normals, and uses a Gibbs sampler to perform the computations. The new method is applied to some well-known macroeconomic time series. It is found that posterior odds ratios favour the independent Student-t linear model over the normal linear model, and that the posterior odds ratio in favour of difference stationarity over trend stationarity is often substantially less in the favored Student-t models. Copyright 1993 by John Wiley & Sons, Ltd.

Suggested Citation

  • Geweke, J, 1993. "Bayesian Treatment of the Independent Student- t Linear Model," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 8(S), pages 19-40, Suppl. De.
  • Handle: RePEc:jae:japmet:v:8:y:1993:i:s:p:s19-40
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